what is this used for?

 

There is no IAC bleeder screw on a stock LT1, and I'm not aware of any aftermarket LT1 throttle bodies that include them. They are used on some aftermarket LS1 throttle bodies, to allow you to tweek the base idle air flow for engines that require more idle air than the IAC circuit can provide.

 

ok thanks.

what does this screw go to/ do??

 

Can't see pics

 

sorry...here is the links

its the gold bleeder screw.

http://by116w.bay116.mail.live.com/a...AF715B8635EF0|

http://by116w.bay116.mail.live.com/a...AF715B8635EF0|

 

Links lead to "Windows Live"????

 

here try these..

http://s89.photobucket.com/albums/k2...ictures013.jpg

http://s89.photobucket.com/albums/k2...ictures014.jpg

 

That is an air bleeder for coolant system, it pumps coolant through the TB to keep it from icing up in cold weather.

Taylor

 

Whatever it is, its not stock for the F-Body LT1 throttle body. First time I've ever seen it. And its not the stock coolant bleeder screws. They are not on the throttle body.

 

That is completely pointless. The coolant line running into the TB is a return line into the radiator.

 

It is a 93 only type of thing. I think I remember having the same on my 93.

Here is a picture from Shoebox's site: